**TL;DR:** You don’t need to do anything right now. But by **28 November 2026**, choose a new tariff if you want to stay on a fixed deal. Otherwise, from **1 January 2027**, you’ll be moved to the Standard Variable tariff. That tariff’s quoted rate is higher than your current unit rate (**34.1p vs 24.6p/kWh**), though prices can change and the letter doesn’t give the price for Fixed Saver 27. Compare the full rates before deciding.